cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A283073 Numbers k such that the central binomial coefficient C(2*k,k) is divisible by k^4.

Table of values

n a(n)
1 1
2 227736432
3 338956200
4 386160984
5 482213160
6 544508118
7 548823405
8 715592220
9 726922482
10 731987190
11 1427877360
12 1448431600
13 1467104760
14 1490842353
15 1491241258
16 1504640335
17 1646570115
18 1852712100
19 1923506200
20 1923927460
21 1924947570
22 2056580995
23 2064409413

List of values

[1, 227736432, 338956200, 386160984, 482213160, 544508118, 548823405, 715592220, 726922482, 731987190, 1427877360, 1448431600, 1467104760, 1490842353, 1491241258, 1504640335, 1646570115, 1852712100, 1923506200, 1923927460, 1924947570, 2056580995, 2064409413]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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